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Common Stock | 12 Months Ended
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Dec. 31, 2018
Equity [Abstract] |
Common Stock | Common Stock In March 2017, the Board of Directors approved an increase of 555,555 Series 2 common stock. As a result, the Company’s restated certificate of incorporation, as amended, authorizes the Company to issue 19,333,333 shares of $0.0001 par value common stock, of which 6,000,000 has been designated as Series 1 common stock and 13,333,333 has been designated as Series 2 common stock. The holders of Series 1 common stock shall have no voting rights; the holders of Series 2 common stock shall have the right to one vote for each such share. In October 2018, the Company amended and restated its certification of incorporation, which authorizes the Company to issue 100,000,000 shares of common stock and 5,000,000 shares of preferred stock, each having a par value of $0.0001. At December 31, 2018, there was no preferred stock issued and outstanding. The holders of common stock are entitled to receive dividends whenever funds are legally available, as, when, and if declared by the Board of Directors. There have been no dividends declared to date. The Company has reserved shares of common stock, on an issued and as-converted basis, for future issuance as follows:
| December 31, 2018 |  | December 31, 2017
| Issued and Outstanding |  |  | Issued and Outstanding |  | Common Stock Equivalent Shares
Common stock | 24,450,757 |  |  |  | — |  |  | — |
Series 1 common stock | — |  |  |  | 3,112,955 |  |  | 3,112,955 |
Series 2 common stock | — |  |  |  | 490,185 |  |  | 490,185 |
Redeemable convertible preferred stock | — |  |  |  | 11,871,578 |  |  | 12,066,654 |
Restricted stock units outstanding | 53,436 |  |  |  | — |  |  | — |
Stock options outstanding | 2,641,198 |  |  |  | 3,001,929 |  |  | 3,001,929 |
Shares available for grant | 2,497,082 |  |  |  | 29,654 |  |  | 29,654 |
Common stock warrants | 118,122 |  |  |  | 124,326 |  |  | 124,326 |
Redeemable convertible preferred stock warrants | — |  |  |  | 156,550 |  |  | 160,657 |
Total | 29,760,595 |  |  |  | 18,787,177 |  |  | 18,986,360 |

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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